Ultra-high sensitivity wavefront sensing for extreme-AO

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

A new wavefront sensing scheme derived from curvature wavefront sensing is presented. Non-linear Curvature wavefront sensing (NLCWFS) is a scheme derived from conventional curvature wavefront sensing. NLCWFS uses four defocused pupil images and a non-linear wavefront reconstruction. NLCWFS is largely achromatic and does not require a flat (<1 rad RMS) wavefront to operate: it is therefore very robust, and is an attractive alternative to less efficient Shack-Hartmann wavefront sensing. For low order aberrations, sensitivity gains corresponding to 5 and 8 stellar magnitudes can be achieved over the conventional Shack-Hartmann sensor on respectively a 8-mtelescope and a 30-m telescope.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7015
DOIs
StatePublished - 2008
Externally publishedYes
EventAdaptive Optics Systems - Marseille, France
Duration: Jun 23 2008Jun 26 2008

Other

OtherAdaptive Optics Systems
CountryFrance
CityMarseille
Period6/23/086/26/08

Fingerprint

Wavefront Sensing
Wavefronts
Extremes
sensitivity
Curvature
curvature
stellar magnitude
Wavefront Reconstruction
pupils
Aberration
Wave Front
Telescope
aberration
Aberrations
Telescopes
telescopes
Sensor
Alternatives
sensors

Keywords

  • Adaptive Optics
  • Coronagraphy

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Guyon, O. (2008). Ultra-high sensitivity wavefront sensing for extreme-AO. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7015). [70151K] https://doi.org/10.1117/12.790170

Ultra-high sensitivity wavefront sensing for extreme-AO. / Guyon, Olivier.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7015 2008. 70151K.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Guyon, O 2008, Ultra-high sensitivity wavefront sensing for extreme-AO. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7015, 70151K, Adaptive Optics Systems, Marseille, France, 6/23/08. https://doi.org/10.1117/12.790170
Guyon O. Ultra-high sensitivity wavefront sensing for extreme-AO. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7015. 2008. 70151K https://doi.org/10.1117/12.790170
Guyon, Olivier. / Ultra-high sensitivity wavefront sensing for extreme-AO. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7015 2008.
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